Sorry for not being as responsive as i would like to be (theman calls and i have to go). This looks like a good (tc workshop) candidate discussion, if still active by netdev11 time.
On 15-12-30 12:50 PM, John Fastabend wrote:
Hi, This is a first take at removing the qdisc lock on the xmit path where qdiscs actually have queues of skbs. The ingress qdisc which is already lockless was "easy" at least in the sense that we did not need any lock-free data structures to hold skbs.
I did some testing over the holidays for a netdev11 paper submission and the ingress qdisc side of things looks very impressive (on an average packet size) on a single (i7 class) cpu. It can handle about 3x what an egress side pktgen type test (not very real life) can handle. Analysis shows the lock is killing us. So if you are looking at low hanging fruit, the egress is the place to look. I have a pktgen change that may be useful for you - I will post it next time i get cycles. I am also a willing guinea pig (given upcoming netdev11) to do some perf testing ;-> cheers, jamal -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
